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Tomas Cvancara came off the bench to score the decisive penalty as Celtic defeated Rangers in a dramatic Scottish Cup quarter-final at Ibrox

Shoot-out hero Tomas Cvancara brushed aside chaotic pitch disturbances after guiding Celtic to victory over Rangers - despite blood visible on his shirt. The Borussia Monchengladbach loanee made a crucial impact on derby day after entering as a substitute to trouble the Rangers' backline in the Scottish Cup thriller.

The towering forward dispatched his penalty past Jack Butland following extra-time to secure a semi-final berth for the Hoops.

After the decisive moment, unsavoury scenes unfolded at Ibrox as supporters flooded onto the pitch. Police stepped in when fans from the home section moved towards the Celtic supporters in retaliation.

There were allegations that a member of Celtic's coaching staff had been assaulted during the disorder. Cvancara was spotted getting involved in an on-field incident.

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Speaking to Premier Sports after the match, Cvancara appeared with blood visibly marking his kit alongside goalkeeper Viljami Sinisalo.

Questioned about the marks on his top by Premier Sports, the striker chose to concentrate on the outcome. He said: "It was a tough game. We know we have quality.

"I trusted that everyone that was on the penalty was going to score and it was quite easy."

Pushed on the tension of the spot kick, he added: "It was a lot of pressure. We were on the opposite side of the pitch where the fans of Rangers [were].

"It was a lot of pressure and I just knew what I had to do."